Patent · US Active

Method for fill level measurement

US8567243B2 · kind B2 · utility

6Cited by

11References

9Claims

0Family size

Assignee

ENDRESS+HAUSER GMBH+CO.KG · DE

Inventors

Alexey Malinovskiy · Maulburg, DE
Herbert Schroth · Schopfheim, DE
Dietmar Spanke · Steinen, DE

Key dates

Filing date	Dec 12, 2008
Grant date	Oct 29, 2013
Priority date	—
Expiry date	Feb 25, 2030

Classification

Technology area (CPC G)Physics
CPC primaryG01F23/80
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method for a fill level measurement in which a first and/or a second fill substance can be located. A rest position can be ascertained, when the entire amount of each fill substance in the container forms a single layer containing only this fill substance, wherein the first fill substance has a smaller specific weight than the second fill substance, and the two fill substances have different dielectric constants. An electromagnetic signal is sent into the container, wherein a part of the signal is reflected. A capacitance between a capacitive probe and a reference electrode is measured, dependent on the amounts of the fill substances located in the container, and, on the basis of the measured capacitance and the measured travel times for each fill substance present in the container, the rest position of its fill substance upper surface is ascertained.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.